A:维持内环境中Na+、K+浓度的相对稳定有利于维持神经细胞的正常兴奋性
B:血红蛋白、肾上腺素、过氧化氢酶、载体蛋白都不属于内环境的组成成分
C:内环境保持相对稳定有利于机体适应外界环境的变化
D:内环境的组成成分保持稳定时人体也有可能患病
根据汉语提示,完成句子。每空一词。(1)I prefer to receive a gift that has some ____ (心思) behind it.(2)The old lady____ (在…旁边) my mother is my grandmother.(3)Henry is____ (想知道) how his mother made so many dishes in such a short time.(4)People in Colombia are pretty____ (放松的) about time.(5)The dress was ____ (专门地) designed by the famous fashion designer.(6)Now he gets up early in the morning and never ____ (猛冲) to school.
不改变分式的值,化简:-0.03+0.1-0.04-0.03=____ .
小明检查身体后,医生建议他多吃水果和蔬菜,医生让他补充的主要营养物质是()